Can you link to larger versions of the images please? It's hard to tell exactly what's going on at this size, though it looks like they are shot looking down through the surface of the water.
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NickMJan 24 '13 at 9:22

@NickMiners You can google her name. There are plenty of images on the internet. Here is the link :- google.com/…
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Vinoth KumarJan 24 '13 at 9:45

7

@VinothKumar - sending people who want to help you to Google is a little bit rude - especially wen the answer to your question can be found on Google
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NirJan 24 '13 at 10:16

@Nir Link to her site was in the question itself, guess both of you overlooked, lol.
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GoodSp33dJan 24 '13 at 10:22

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@Nir. I'm sorry; I did not mean to be rude. I just thought that is the easiest way to find her images :)
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Vinoth KumarJan 24 '13 at 14:10

2 Answers
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The effects in my images are created naturally in-camera using the
refraction of light and movement in different depths of water. Light
has a lower optical density in the air, while light traveling in water
has a higher optical density, causing a bending of light and the
captured image while bodies are immersed in water.

From this post -- Rogers creates her photos in swimming pools at night. The scenes are illuminated with bright off-camera lights

There's also more information in this PDF on Christy Lee Rogers's own site

Light does not have a property called "optical density" (here, also "refractive index"). Material through which light travels does. Water has a higher refractive index than air. When light passes through the transition of two materials of different RIs, it is refracted, or bent. This is how lenses work. The rippling effect in the photos is caused by the air to water change in RI. "Optical density" usually refers to the absorbance of a material but can refer to RI as well.
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CPRitterJan 24 '13 at 13:13